heterodyne

版本 1.0.0 (3.9 KB) 作者: David Mellinger
Shift a signal in frequency using heterodyning, with appropriate filtering
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更新时间 2022/5/23

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Given a signal x, its sample rate sRate, and passband of a two-element vector [loFreq highFreq], transform the signal by shifting the passband in frequency down to 0 Hz and removing the signal at other frequencies. This is done by (1) filtering the signal to remove energy outside the passband, (2) heterodyning to frequency-shift the passband down to 0 Hz (the 'difference frequencies'), and (3) filtering again to remove the second copy of the signal that heterodyning creates (the 'sum frequencies').

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David Mellinger (2024). heterodyne (https://www.mathworks.com/matlabcentral/fileexchange/112100-heterodyne), MATLAB Central File Exchange. 检索时间: .

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1.0.0